Sangamon Water Quality Report
17 cities ranked · Average grade: B · Illinois
Avg Score
79.1
Cities Ranked
17
Health Violations
11
PFAS Detected
1
79.1
County avg score
17
Cities ranked
82%
A or B grade
12%
D or F grade
11
Health violations
1
PFAS detected
Grade Distribution
How Sangamon cities scored
A
8
47%
Excellent
B
6
35%
Good
C
1
6%
Fair
D
2
12%
Poor
F
0
0%
Failing
Comparison
County vs Illinois average
▼ 0.6 pts below state average
City Map
Water quality across Sangamon
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Sangamon
County context
100.0%
of residents on fluoridated water (CDC, 2020)
181
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Sangamon
Industrial polluters nearby
Facilities reporting the most surface-water releases in Sangamon, 2023.
Total reported releases to surface water: 181 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
CITY WATER LIGHT & POWER CITY OF SPRINGFIELD SPRINGFIELD, IL62703 | Manganese And Manganese Compounds | 181 |
US DOD USAF CAPITAL MAP ANG SPRINGFIELD, IL62707 | — | — |
SOLOMON COLORS INC. SPRINGFIELD, IL62702 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 17 cities in Sangamon
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Williamsville | A+ | 97 | 6K | 2 | ||
| 2 | Chatham | A | 90.2 | 16K | 14 | Health Unresolved | |
| 3 | Rochester | A- | 89.8 | 4K | 23 | Unresolved | |
| 4 | Divernon | A- | 89.7 | 1K | 7 | Health Unresolved | |
| 5 | Pawnee | A- | 89.3 | 3K | 10 | Health Unresolved | |
| 6 | Loami | A- | 88.3 | 812 | 6 | Health Unresolved | |
| 7 | Auburn | A- | 87.4 | 5K | 14 | Health Unresolved | |
| 8 | Thayer | A- | 85.9 | 721 | 24 | Health Unresolved | |
| 9 | Grandview | B+ | 83.4 | 1K | 9 | Health Unresolved | |
| 10 | Jerome | B+ | 83.1 | 2K | 17 | Health Unresolved | |
| 11 | Riverton | B+ | 83 | 4K | 24 | Unresolved | |
| 12 | Pleasant Plains | B+ | 80 | 2K | 8 | Unresolved | |
| 13 | Buffalo | B- | 73.2 | 1K | 29 | Unresolved | |
| 14 | Illiopolis | B- | 72.8 | 1K | 20 | Health Unresolved | |
| 15 | Dawson | C- | 57.2 | 2K | 46 | Unresolved | |
| 16 | New Berlin | D | 48.1 | 2K | 66 | Health Unresolved | |
| 17 | Springfield | D | 47 | 130K | 71 | Health Unresolved |